Trilobita - Phacopida - Encrinuridae
Full reference: W. R. Evitt and R. P. Tripp. 1977. Silicified Middle Ordovician trilobites from the families Encrinuridae and Staurocephalidae. Palaeontographica Abteilung A 157:109-174
Parent taxon: Encrinurinae according to D. K. Moss and S. R. Westrop 2014
See also Evitt and Tripp 1977 and Sepkoski 2002
Sister taxa: Billevittia, Brianurus, Coronocephalus, Cromus, Encrinuraspis, Encrinuroides, Encrinurus, Erratencrinurus, Fragiscutum, Frammia, Frencrinuroides, Johntempleia, Kailia, Senticucullus, Walencrinuroides
Subtaxa: Physemataspis (Physemataspis) Physemataspis (Prophysemataspis) Physemataspis coopi Physemataspis insularis Physemataspis mirabilis Physemataspis tholus Physemataspis torulatus
Type: Physemataspis coopi
Ecology: fast-moving low-level epifaunal carnivore
Distribution:
• Whiterockian of United States (3: New York, Vermont collections)
• Ordovician of the United Kingdom (1), United States (4: Virginia)
Total: 8 collections including 10 occurrences
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.